PHP命令行加密解密使用教程

<?php
function encrypt($data, $key) {
    $method = 'AES-256-CBC';
    $iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length($method));
    $encrypted = openssl_encrypt($data, $method, $key, 0, $iv);
    return base64_encode($iv . $encrypted);
}

// 命令行调用：php encrypt.php
$key = 'your-32-byte-secret-key-here!!!!'; // 必须32字节
$data = 'Hello, this is secret!';
echo "加密结果: " . encrypt($data, $key) . "\n";
?>

<?php
function decrypt($raw, $key) {
    $method = 'AES-256-CBC';
    $data = base64_decode($raw);
    $ivLength = openssl_cipher_iv_length($method);
    $iv = substr($data, 0, $ivLength);
    $encrypted = substr($data, $ivLength);
    return openssl_decrypt($encrypted, $method, $key, 0, $iv);
}

$key = 'your-32-byte-secret-key-here!!!!';
$encryptedData = $argv[1] ?? '';
if ($encryptedData) {
    echo "解密结果: " . decrypt($encryptedData, $key) . "\n";
} else {
    echo "请传入加密字符串\n";
}
?>

<?php
if (!extension_loaded('sodium')) {
    die('Sodium扩展未启用');
}

$key = sodium_crypto_secretbox_keygen();
$nonce = random_bytes(SODIUM_CRYPTO_SECRETBOX_NONCEBYTES);
$message = 'This is a secret message';

$ciphertext = sodium_crypto_secretbox($message, $nonce, $key);
$encoded = base64_encode($nonce . $ciphertext);

echo "加密后: " . $encoded . "\n";

// 解密
$decoded = base64_decode($encoded);
$dnonce = substr($decoded, 0, SODIUM_CRYPTO_SECRETBOX_NONCEBYTES);
$dtext = substr($decoded, SODIUM_CRYPTO_SECRETBOX_NONCEBYTES);

try {
    $decrypted = sodium_crypto_secretbox_open($dtext, $dnonce, $key);
    echo "解密后: " . $decrypted . "\n";
} catch (Exception $e) {
    echo "解密失败\n";
}
?>